chore: use utils.cosmiconfig for eslint and prettier

Author: mochaaP

lua/null-ls/builtins/code_actions/eslint.lua

@@ -168,18 +168,7 @@ return h.make_builtin({
         end,
         dynamic_command = cmd_resolver.from_node_modules(),
         cwd = h.cache.by_bufnr(function(params)
-            return u.root_pattern(
-                -- https://eslint.org/docs/latest/user-guide/configuring/configuration-files-new
-                "eslint.config.js",
-                -- https://eslint.org/docs/user-guide/configuring/configuration-files#configuration-file-formats
-                ".eslintrc",
-                ".eslintrc.js",
-                ".eslintrc.cjs",
-                ".eslintrc.yaml",
-                ".eslintrc.yml",
-                ".eslintrc.json",
-                "package.json"
-            )(params.bufname)
+            return u.cosmiconfig("eslint")(params.bufname)
         end),
     },
     factory = h.generator_factory,

lua/null-ls/builtins/diagnostics/eslint.lua

@@ -52,18 +52,7 @@ return h.make_builtin({
         on_output = handle_eslint_output,
         dynamic_command = cmd_resolver.from_node_modules(),
         cwd = h.cache.by_bufnr(function(params)
-            return u.root_pattern(
-                -- https://eslint.org/docs/latest/user-guide/configuring/configuration-files-new
-                "eslint.config.js",
-                -- https://eslint.org/docs/user-guide/configuring/configuration-files#configuration-file-formats
-                ".eslintrc",
-                ".eslintrc.js",
-                ".eslintrc.cjs",
-                ".eslintrc.yaml",
-                ".eslintrc.yml",
-                ".eslintrc.json",
-                "package.json"
-            )(params.bufname)
+            return u.cosmiconfig("eslint")(params.bufname)
         end),
     },
     factory = h.generator_factory,

lua/null-ls/builtins/formatting/eslint.lua

@@ -45,18 +45,7 @@ return h.make_builtin({
         dynamic_command = cmd_resolver.from_node_modules(),
         check_exit_code = { 0, 1 },
         cwd = h.cache.by_bufnr(function(params)
-            return u.root_pattern(
-                -- https://eslint.org/docs/latest/user-guide/configuring/configuration-files-new
-                "eslint.config.js",
-                -- https://eslint.org/docs/user-guide/configuring/configuration-files#configuration-file-formats
-                ".eslintrc",
-                ".eslintrc.js",
-                ".eslintrc.cjs",
-                ".eslintrc.yaml",
-                ".eslintrc.yml",
-                ".eslintrc.json",
-                "package.json"
-            )(params.bufname)
+            return u.cosmiconfig("eslint")(params.bufname)
         end),
     },
 })

lua/null-ls/builtins/formatting/prettier.lua

@@ -44,20 +44,7 @@ return h.make_builtin({
         to_stdin = true,
         dynamic_command = cmd_resolver.from_node_modules(),
         cwd = h.cache.by_bufnr(function(params)
-            return u.root_pattern(
-                -- https://prettier.io/docs/en/configuration.html
-                ".prettierrc",
-                ".prettierrc.json",
-                ".prettierrc.yml",
-                ".prettierrc.yaml",
-                ".prettierrc.json5",
-                ".prettierrc.js",
-                ".prettierrc.cjs",
-                ".prettierrc.toml",
-                "prettier.config.js",
-                "prettier.config.cjs",
-                "package.json"
-            )(params.bufname)
+            return u.cosmiconfig("prettier")(params.bufname)
         end),
     },
     factory = h.formatter_factory,

lua/null-ls/builtins/formatting/prettier_d_slim.lua

@@ -46,20 +46,7 @@ return h.make_builtin({
         to_stdin = true,
         dynamic_command = cmd_resolver.from_node_modules(),
         cwd = h.cache.by_bufnr(function(params)
-            return u.root_pattern(
-                -- https://prettier.io/docs/en/configuration.html
-                ".prettierrc",
-                ".prettierrc.json",
-                ".prettierrc.yml",
-                ".prettierrc.yaml",
-                ".prettierrc.json5",
-                ".prettierrc.js",
-                ".prettierrc.cjs",
-                ".prettierrc.toml",
-                "prettier.config.js",
-                "prettier.config.cjs",
-                "package.json"
-            )(params.bufname)
+            return u.cosmiconfig("prettier")(params.bufname)
         end),
     },
     factory = h.formatter_factory,

lua/null-ls/builtins/formatting/prettierd.lua

@@ -48,20 +48,7 @@ return h.make_builtin({
         dynamic_command = cmd_resolver.from_node_modules(),
         to_stdin = true,
         cwd = h.cache.by_bufnr(function(params)
-            return u.root_pattern(
-                -- https://prettier.io/docs/en/configuration.html
-                ".prettierrc",
-                ".prettierrc.json",
-                ".prettierrc.yml",
-                ".prettierrc.yaml",
-                ".prettierrc.json5",
-                ".prettierrc.js",
-                ".prettierrc.cjs",
-                ".prettierrc.toml",
-                "prettier.config.js",
-                "prettier.config.cjs",
-                "package.json"
-            )(params.bufname)
+            return u.cosmiconfig("prettier")(params.bufname)
         end),
     },
     factory = h.formatter_factory,

lua/null-ls/utils/cosmiconfig.lua

@@ -0,0 +1,26 @@
+local u = require("null-ls.utils")
+
+-- Create the default root_pattern for tools using cosmiconfig.
+-- https://github.com/cosmiconfig/cosmiconfig#usage-for-end-users
+---@param module_name string The module name.
+return function(module_name)
+    local patterns = {
+        "package.json",
+        ".{NAME}rc",
+        ".{NAME}rc.json",
+        ".{NAME}rc.yaml",
+        ".{NAME}rc.yml",
+        ".{NAME}rc.js",
+        ".{NAME}rc.ts",
+        ".{NAME}rc.cjs",
+        "{NAME}.config.js",
+        "{NAME}.config.ts",
+        "{NAME}.config.mjs",
+        "{NAME}.config.cjs",
+    }
+    for i, v in ipairs(patterns) do
+        patterns[i] = string.gsub(v, "{NAME}", module_name)
+    end
+
+    return u.root_pattern(table.unpack(patterns))
+end

lua/null-ls/utils/init.lua

@@ -348,4 +348,8 @@ M.make_params = function(...)
     return require("null-ls.utils.make_params")(...)
 end
 
+M.cosmiconfig = function(...)
+    return require("null-ls.utils.cosmiconfig")(...)
+end
+
 return M